Suffix conditionals

[tczajka]

@ekkis

and ternary operator:

let x = done ? 0 : 1;

these forms of expression are more terse and natural than the way we currently have to express them, for example:

My wish list for Rust 2024 and beyond

Not only is this not really a great reason to duplicate a feature (unless you were to also remove the previous notation), it would be ambiguous because ? already has another meaning, for example: foo() ? - bar() ? -1 : 2 could be equivalent to: if foo() { -bar()? - 1 } else { 2 } or if foo()? - bar { -1 } else { 2 }